installation error

[houseno10]

hi,
Thanks for making Roundcube.
I have one issue while installation Roundcube, can you please help me in this.

Following Error -
Fatal error: Undefined class name 'rcube_install' in /hermes/web02/b43/pow.houseno10/htdocs/Mail/installer/index.php on line 20

Not able to understand any thing.

[JohnDoh]

what version of PHP are you runnning? RoundCube requires PHP5.2 or above

[houseno10]

my host is providing me PHP 4.4.7, what can be done in this case?

[JohnDoh]

Ask you host if they can upgrade you to PHP5.